Non-linear image mapping with non-coplanar clipping planes
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current display technologies face challenges in achieving uniform angular resolution across the field of view, with most systems driving resolution to the edges, leading to inefficient use of pixels and increased waste as the field of view increases.
Innovation Solution
The implementation of a display processing system that uses non-coplanar clipping planes to balance angular resolution, allowing each image generator to form images optimally and combining them using a combiner with warping functions to achieve a geometrically correct, high-resolution image.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If coplanar clipping planes are used in conventional display systems, then the system structure is simple and easy to implement, but the angular resolution is concentrated at the edges of the field of view with significant pixel waste
Solution Approach 1:
The patent divides the single coplanar clipping plane into multiple non-coplanar clipping planes, with each plane dedicated to a specific angular range. This segmentation allows each clipping plane to optimize pixel distribution for its designated angular sector, preventing the concentration of angular resolution at edges while maintaining manageable system complexity through modular processing.
Solution Approach 2:
Each non-coplanar clipping plane is configured with specific geometric properties optimized for its local angular range. The clipping planes are positioned and oriented to match the angular characteristics of their respective regions, ensuring uniform angular resolution locally across different parts of the field of view rather than applying a uniform approach globally.
2Area of stationary object
If the field of view is increased to provide larger display area, then the coverage area is improved, but the pixel waste increases significantly due to non-uniform angular resolution
Solution Approach 1:
By segmenting the large field of view into multiple angular ranges, each handled by a dedicated non-coplanar clipping plane, the system can maintain efficient pixel utilization across the entire expanded display area. Each segment processes only its designated angular range, preventing the pixel waste that occurs when a single plane attempts to cover the entire large field of view.
Solution Approach 2:
The patent transitions from a two-dimensional coplanar clipping plane to three-dimensional non-coplanar clipping planes. This dimensional change allows the clipping planes to better match the angular geometry of the expanded field of view, enabling efficient pixel distribution across larger display areas without the quadratic increase in pixel waste that characterizes conventional systems.
3Manufacturing precision
If angular resolution is concentrated at the edges of the field of view, then the edge detail is enhanced, but the overall pixel utilization efficiency decreases to below 91%
Solution Approach 1:
Each non-coplanar clipping plane is locally optimized for its specific angular range, providing appropriate resolution characteristics for that region without creating the edge-concentration effect of conventional systems. This local optimization ensures that no single region dominates pixel consumption, maintaining overall pixel utilization efficiency above 96% while providing sufficient detail across the entire field of view.
Data Source
AI summary
A display processing system for providing video signals for displaying an image is provided. The display processing system comprises input channels for receiving a plurality of component images, each component image being a portion of the complete image for display, the image data of each component image being defined by a view frustum having a clipping plane, and a combiner for combining the image data of the component images. According to the present invention, at least two clipping planes of two of the view frustums are non-coplanar. Such display processing system corrects for the defect of driving angular resolution to the edges of the field of view of a display system, in particular for large field-of-view display systems, and balances the overall system angular resolution by allowing each image generator channel to render to an optimal view frustum for its portion of the complete image.